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[quote]QUOTE: Originally posted by idahoan2004 [quote]QUOTE: Originally posted by Pondini BUT when I change 56.4 to 2 for Regulated Throttle control, both engines go absolutely nuts! Same behavior on both chips, forward and reverse, even after reset. (And like some of you, the little dude says "Reset", but no whistle sounds.) The 3.0 manual says..... [/quote] Not all of the information in the 3.0 manual is applicable to the Q1a upgrade chips. You should be using the Q1A DCC Reference Manual v4, preliminary extracts of which are available on the QSIsolutions web site in the Tech Info section. The Q1a CV 56.4 settings are changed from earlier versions of the firmware. Regulated Throttle Control is enabled with CV 56.4 set to 1, not 2. A setting of 2 places it in Load Compensated BEMF Speed Control mode, which is not yet available due to threatened litigation from Mike's Train House (as is mode 3, Calibrated Speed Control). I am surprised it does anything with CV 56.4 set to to 2. Use 0 (Standard Throttle Control), or 1 (Regulated Throttle Control). Another change appears to be the reset confirmation. Now we get the "dude" saying RESET when a reset is performed, instead of three whistle hoots. [/quote] Well, silly me! I actually believed the instructions that came with my chips! They say that the operations manual for the new chip is at: http://www.qsisolutions.com/pdf/q1a-steam-p-man.pdf. That has NO reference to CV 56.4 or how to select throttle control in DCC. Now that I investigate, their web site option for "Q1a Steam Manual v4.1 for Upgrade Chips" gets http://www.qsisolutions.com/pdf/q1a-steam-v4-man.pdf, which has the correct info. The instructions also specify "the complete user manuals are here: DCC: http://www.qsisolutions.com/pdf/q-dccman30.pdf". That, of course, is the "original" V 3.0 manual, dated 2/16/05, and showing 0, 1, and 2 for Standard, Speed Control, and Regulated Throttle Control for 56.4. Of course, you're right about the "extract" at http://www.qsisolutions.com/pdf/q-dccman4-prelim_extract.pdf, which is only slightly confusing: on page 1 showing changes, it says "CV 56.5 Regulated Throttle Control ..." Later on, naturally, it correctly refers to CV 56.4, not 56.5, with the values you mentioned. And the upgrade instructions do correctly say to reset 56.4 to 1 for RTC. Then again, it also says the CV 2 default is 8. I'll call Tony's tomorrow -- he's probably already sent the chips, but at least I can get him to correct the instructions! Thanks for steering me in the right direction!
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